An Object's Attributes Are References to Objects of Other Classes

question 41

Multiple Choice

An object's attributes are references to objects of other classes. Embedding references to objects of other classes is a form of software reusability known as ________ and is sometimes referred to as the ________ relationship.

• A) composition, "is a"
• B) inheritance, "has a"
• C) composition, "has a"
• D) inheritance, "is a"

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Definitions:

Null Hypothesis

A statement of no effect or no difference, used as a default assumption until evidence indicates otherwise.

Test Statistic

A value calculated from a sample of data that is used to evaluate the validity of a hypothesis in statistical hypothesis testing.

α

Typically used to represent the significance level in hypothesis testing, which is the probability of rejecting the null hypothesis when it is actually true.

P-value

The probability of observing data at least as extreme as the observed data, assuming the null hypothesis is true.